ADSORPTION OF BI3-FORMALDEHYDE RESIN HAVING TETRAETHYLENEPENTAMINE( ION WITH DIPHENYL PHOS PHONATE)

The titled resin showed good adsorption ability for Bi3+ ion in the hy drochloric acid solution. Bi3+ ion is readily adsorbed on the resin as anionic chloro complexes from hydrochloric acid solution with the con centration greater than 0.1 mol dm(-3). The adsorption capacity of the titled chelating resin for Bi3+ ion was about 1.6 mmol per gram resin on a dry weight base. The adsorption equilibrium was attained within 5 min. Bi3+ ion was adsorbed effectively, passing Bi3+ ion solution (2 5 mg dm(-3)) through the resin column at SV250 h(-1). Bi3+ chloro comp lex loaded on the resin can be readily eluted with 1.4 mol dm(-3) nitr ic acid solution.